The pressure caused by water is: P = P0 + bgh = 1.013×10^5 + 10^3×9.81 × 1.5 = 1.18 atm
Answer:
49.925N
Explanation:
According to newton's second law of motion:
is the sum of force along the x component
m is the mass of the crate
ax is the acceleration
Fk is the magnitude of the force of kinetic friction
Given
Fm = 93.7
m = 42.5kg
a = 1.03m/s²
Substitute into the formula:
Hence the magnitude of the force of kinetic friction (in N) acting on the crate is 49.925N
Answer:
The heat energy required is, E = 2200 J
Explanation:
Given,
The mass of paraffin, m = 2 Kg
The energy required to raise the temperature of the paraffin by 200° C = 44000 J
Then the heat energy required to raise the temperature of the paraffin by 10° C is given by,
Since 44000 J raises temperature by 200° C, then
E = 44000 J / 20
= 2200 J
Hence, the energy required to raise the temperature of the paraffin by 10° C is, E = 2200 J
Answer:
Thermal energy of an isolated system changes with time If the mechanical energy of that system is constant according to the first law of thermodynamics, which states that thermal energy of an isolated system can still change as long as the total energy of that system does not change.
Explanation:
